I've never had a cycle this time of year. I just started tapering off the topamax, and was down to 50mg, when a cycle hit. I'm now "untapering" back up and am currently at 100mg. Won't get to 200mg for another 3 weeks. The odd weather probably is affecting my cycle, with the crazy hot/cold, wet/dry in the northeast, as well as my travel to the south of Texas every week. This is crazy.

Interesting,

The cycle I have just come out of was my first in 30 years at this time of year, and I believe it was tied to barometric pressure and sinus. We are having flooding in our area also, but I have no other triggers (other than I lost alot of sleep in the 3 weeks before this cycle started)..
Hope you get feeling better real quick!